Submission #58933

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
58933	2018-07-19T20:59:09 Z	reality	Ancient Books (IOI17_books)	C++17	50 / 100	397 ms	161072 KB

books

#include "books.h"
#include "bits/stdc++.h"
using namespace std;
#define fi first
#define se second
#define ll long long
#define dbg(v) cerr<<#v<<" = "<<v<<'\n'
#define vi vector<int>
#define vl vector <ll>
#define pii pair<int,int>
#define mp make_pair
#define db long double
#define pb push_back
#define all(s) s.begin(),s.end()
template < class T > T smin(T &a,T b) {if (a > b) a = b;return a;}
template < class T > T smax(T &a,T b) {if (a < b) a = b;return a;}
#include "books.h"
const int oo = 1e9;
int n;
int D1[20][1 << 20];
int D2[20][1 << 20];
int Log[1 << 20];
int get1(int l,int r) {
	int k = Log[r - l + 1];
	return min(D1[k][l],D1[k][r - (1 << k) + 1]);
}
int get2(int l,int r) {
	int k = Log[r - l + 1];
	return max(D2[k][l],D2[k][r - (1 << k) + 1]);
}
long long minimum_walk(std::vector<int> p, int s) {
	n = p.size();
	int a = 0,b = n - 1;
	while (a + 1 <= s && p[a] == a)
		--a;
	while (b - 1 >= s && p[b] == b)
		--b;
	int l = s,r = s;
	ll ans = 0;
	for (int i = 0;i < n;++i)
		ans += abs(i - p[i]);
	for (int i = 0;i < n;++i) {
		D1[0][i] = D2[0][i] = p[i];
	}
	for (int t = 1;t < 20;++t)
		for (int i = 0;i + (1 << t) <= n;++i) {
			D1[t][i] = min(D1[t - 1][i],D1[t - 1][i + (1 << (t - 1))]);
			D2[t][i] = max(D2[t - 1][i],D2[t - 1][i + (1 << (t - 1))]);
		}
	for (int i = 2;i <= n;++i)
		Log[i] = Log[i / 2] + 1;
	while (a < l || r < b) {
		while (get1(l,r) < l || r < get2(l,r)) {
			smin(l,get1(l,r));
			smax(r,get2(l,r));
		}
		int cl = 0,cr = 0;
		int l1 = l,r1 = l - 1;
		int l2 = r + 1,r2 = r;
		while (a < l1) {
			--l1;
			cl += 2;
			while (l1 > get1(l1,r1))
				smin(l1,get1(l1,r1));
			if (get2(l1,r1) > r)
				break;
		}
		while (r2 < b) {
			++r2;
			cr += 2;
			while (r2 < get2(l2,r2))
				smax(r2,get2(l2,r2));
			if (get1(l2,r2) < l)
				break;
		}
		if (get2(l1,r1) > r && get1(l2,r2) < l) {
			ans += min(cl,cr);
			l = l1;
			r = r2;
		} else {
			ans += cl + cr;
			break;
		}
	}
	return ans;
}

Subtask #1

12.0 / 12.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	548 KB	Output is correct
3	Correct	2 ms	548 KB	Output is correct
4	Correct	2 ms	548 KB	Output is correct
5	Correct	2 ms	548 KB	Output is correct
6	Correct	2 ms	548 KB	Output is correct
7	Correct	2 ms	548 KB	Output is correct
8	Correct	2 ms	548 KB	Output is correct
9	Correct	2 ms	548 KB	Output is correct
10	Correct	3 ms	560 KB	Output is correct
11	Correct	2 ms	688 KB	Output is correct
12	Correct	3 ms	688 KB	Output is correct
13	Correct	2 ms	688 KB	Output is correct
14	Correct	2 ms	688 KB	Output is correct
15	Correct	2 ms	688 KB	Output is correct
16	Correct	3 ms	688 KB	Output is correct
17	Correct	2 ms	688 KB	Output is correct
18	Correct	2 ms	688 KB	Output is correct

Subtask #2

10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	548 KB	Output is correct
3	Correct	2 ms	548 KB	Output is correct
4	Correct	2 ms	548 KB	Output is correct
5	Correct	2 ms	548 KB	Output is correct
6	Correct	2 ms	548 KB	Output is correct
7	Correct	2 ms	548 KB	Output is correct
8	Correct	2 ms	548 KB	Output is correct
9	Correct	2 ms	548 KB	Output is correct
10	Correct	3 ms	560 KB	Output is correct
11	Correct	2 ms	688 KB	Output is correct
12	Correct	3 ms	688 KB	Output is correct
13	Correct	2 ms	688 KB	Output is correct
14	Correct	2 ms	688 KB	Output is correct
15	Correct	2 ms	688 KB	Output is correct
16	Correct	3 ms	688 KB	Output is correct
17	Correct	2 ms	688 KB	Output is correct
18	Correct	2 ms	688 KB	Output is correct
19	Correct	2 ms	700 KB	Output is correct
20	Correct	2 ms	832 KB	Output is correct
21	Correct	3 ms	852 KB	Output is correct
22	Correct	3 ms	852 KB	Output is correct
23	Correct	2 ms	852 KB	Output is correct
24	Correct	3 ms	852 KB	Output is correct
25	Correct	3 ms	852 KB	Output is correct
26	Correct	3 ms	852 KB	Output is correct
27	Correct	3 ms	852 KB	Output is correct
28	Correct	2 ms	852 KB	Output is correct
29	Correct	2 ms	880 KB	Output is correct

Subtask #3

28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	548 KB	Output is correct
3	Correct	2 ms	548 KB	Output is correct
4	Correct	2 ms	548 KB	Output is correct
5	Correct	2 ms	548 KB	Output is correct
6	Correct	2 ms	548 KB	Output is correct
7	Correct	2 ms	548 KB	Output is correct
8	Correct	2 ms	548 KB	Output is correct
9	Correct	2 ms	548 KB	Output is correct
10	Correct	3 ms	560 KB	Output is correct
11	Correct	2 ms	688 KB	Output is correct
12	Correct	3 ms	688 KB	Output is correct
13	Correct	2 ms	688 KB	Output is correct
14	Correct	2 ms	688 KB	Output is correct
15	Correct	2 ms	688 KB	Output is correct
16	Correct	3 ms	688 KB	Output is correct
17	Correct	2 ms	688 KB	Output is correct
18	Correct	2 ms	688 KB	Output is correct
19	Correct	2 ms	700 KB	Output is correct
20	Correct	2 ms	832 KB	Output is correct
21	Correct	3 ms	852 KB	Output is correct
22	Correct	3 ms	852 KB	Output is correct
23	Correct	2 ms	852 KB	Output is correct
24	Correct	3 ms	852 KB	Output is correct
25	Correct	3 ms	852 KB	Output is correct
26	Correct	3 ms	852 KB	Output is correct
27	Correct	3 ms	852 KB	Output is correct
28	Correct	2 ms	852 KB	Output is correct
29	Correct	2 ms	880 KB	Output is correct
30	Correct	323 ms	161004 KB	Output is correct
31	Correct	294 ms	161004 KB	Output is correct
32	Correct	283 ms	161004 KB	Output is correct
33	Correct	329 ms	161036 KB	Output is correct
34	Correct	295 ms	161036 KB	Output is correct
35	Correct	284 ms	161072 KB	Output is correct
36	Correct	277 ms	161072 KB	Output is correct
37	Correct	289 ms	161072 KB	Output is correct
38	Correct	281 ms	161072 KB	Output is correct
39	Correct	279 ms	161072 KB	Output is correct
40	Correct	397 ms	161072 KB	Output is correct
41	Correct	299 ms	161072 KB	Output is correct
42	Correct	391 ms	161072 KB	Output is correct
43	Correct	286 ms	161072 KB	Output is correct

Subtask #4

0 / 20.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	3 ms	161072 KB	Output is correct
2	Correct	3 ms	161072 KB	Output is correct
3	Correct	4 ms	161072 KB	Output is correct
4	Correct	2 ms	161072 KB	Output is correct
5	Correct	2 ms	161072 KB	Output is correct
6	Correct	3 ms	161072 KB	Output is correct
7	Correct	3 ms	161072 KB	Output is correct
8	Correct	3 ms	161072 KB	Output is correct
9	Correct	3 ms	161072 KB	Output is correct
10	Incorrect	3 ms	161072 KB	3rd lines differ - on the 1st token, expected: '0', found: '2000'
11	Halted	0 ms	0 KB	-

Subtask #5

0 / 30.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	548 KB	Output is correct
3	Correct	2 ms	548 KB	Output is correct
4	Correct	2 ms	548 KB	Output is correct
5	Correct	2 ms	548 KB	Output is correct
6	Correct	2 ms	548 KB	Output is correct
7	Correct	2 ms	548 KB	Output is correct
8	Correct	2 ms	548 KB	Output is correct
9	Correct	2 ms	548 KB	Output is correct
10	Correct	3 ms	560 KB	Output is correct
11	Correct	2 ms	688 KB	Output is correct
12	Correct	3 ms	688 KB	Output is correct
13	Correct	2 ms	688 KB	Output is correct
14	Correct	2 ms	688 KB	Output is correct
15	Correct	2 ms	688 KB	Output is correct
16	Correct	3 ms	688 KB	Output is correct
17	Correct	2 ms	688 KB	Output is correct
18	Correct	2 ms	688 KB	Output is correct
19	Correct	2 ms	700 KB	Output is correct
20	Correct	2 ms	832 KB	Output is correct
21	Correct	3 ms	852 KB	Output is correct
22	Correct	3 ms	852 KB	Output is correct
23	Correct	2 ms	852 KB	Output is correct
24	Correct	3 ms	852 KB	Output is correct
25	Correct	3 ms	852 KB	Output is correct
26	Correct	3 ms	852 KB	Output is correct
27	Correct	3 ms	852 KB	Output is correct
28	Correct	2 ms	852 KB	Output is correct
29	Correct	2 ms	880 KB	Output is correct
30	Correct	323 ms	161004 KB	Output is correct
31	Correct	294 ms	161004 KB	Output is correct
32	Correct	283 ms	161004 KB	Output is correct
33	Correct	329 ms	161036 KB	Output is correct
34	Correct	295 ms	161036 KB	Output is correct
35	Correct	284 ms	161072 KB	Output is correct
36	Correct	277 ms	161072 KB	Output is correct
37	Correct	289 ms	161072 KB	Output is correct
38	Correct	281 ms	161072 KB	Output is correct
39	Correct	279 ms	161072 KB	Output is correct
40	Correct	397 ms	161072 KB	Output is correct
41	Correct	299 ms	161072 KB	Output is correct
42	Correct	391 ms	161072 KB	Output is correct
43	Correct	286 ms	161072 KB	Output is correct
44	Correct	3 ms	161072 KB	Output is correct
45	Correct	3 ms	161072 KB	Output is correct
46	Correct	4 ms	161072 KB	Output is correct
47	Correct	2 ms	161072 KB	Output is correct
48	Correct	2 ms	161072 KB	Output is correct
49	Correct	3 ms	161072 KB	Output is correct
50	Correct	3 ms	161072 KB	Output is correct
51	Correct	3 ms	161072 KB	Output is correct
52	Correct	3 ms	161072 KB	Output is correct
53	Incorrect	3 ms	161072 KB	3rd lines differ - on the 1st token, expected: '0', found: '2000'
54	Halted	0 ms	0 KB	-